US8337940B2ExpiredUtilityA1

Manufacturing method of display device

47
Assignee: TOKUDA ATSUSHIPriority: Dec 25, 2002Filed: Sep 25, 2006Granted: Dec 25, 2012
Est. expiryDec 25, 2022(expired)· nominal 20-yr term from priority
Inventors:Atsushi Tokuda
H10K 71/00H10K 59/122H10K 71/191H10K 71/12H10K 50/17
47
PatentIndex Score
0
Cited by
45
References
24
Claims

Abstract

A method for manufacturing a display device of the present invention comprises the steps of forming insulating barriers which surround electrode and project upward from the surface of the electrode, and bringing the whole substrate into contact with water after applying the solution including an acceptor in wet process. According to the present invention, an organic conductive layer can be uniformly formed over a substrate in wet process even if the substrate does not have a smooth surface and has distribution in wettability of the surface.

Claims

exact text as granted — not AI-modified
1. A method of manufacturing a display device comprising:
 forming a layer which contains a first acceptor on an electrode by applying a first liquid which contains the first acceptor onto the electrode; 
 washing the layer which contains the first acceptor with water, thereby removing a first part of the layer which contains the first acceptor from a central portion of the electrode; 
 wherein a second part of the layer which contains the first acceptor remains on the electrode after washing the layer which contains the first acceptor with water, 
 forming a conductive layer comprising a second acceptor over the electrode and the second part of the layer which contains the first acceptor by applying a second liquid which contains the second acceptor over the electrode; and 
 forming an electroluminescent layer on the conductive layer comprising the second acceptor. 
 
     
     
       2. The method according to  claim 1  wherein said second acceptor is the same as the first acceptor. 
     
     
       3. The method according to  claim 1  wherein each of said first liquid and said second liquid is an aqueous solution. 
     
     
       4. The method according to  claim 1  wherein said electroluminescent layer comprises an organic material. 
     
     
       5. The method according to  claim 1  wherein said display device is an active matrix type display. 
     
     
       6. A method of manufacturing a display device comprising:
 forming a layer which contains a first donor on an electrode by applying a first liquid which contains the first donor onto the electrode; 
 washing the layer which contains the first donor with water, thereby removing a first part of the layer which contains the first donor from a central portion of the electrode; 
 wherein a second part of the layer which contains the first donor remains on the electrode after washing the layer which contains the first donor with water, 
 forming a conductive layer comprising a second donor over the electrode and the second part of the layer which contains the first donor by applying a second liquid which contains the second donor over the electrode; and 
 forming an electroluminescent layer on the conductive layer comprising the second donor. 
 
     
     
       7. The method according to  claim 6  wherein said second donor is the same as the first donor. 
     
     
       8. The method according to  claim 6  wherein each of said first liquid and said second liquid is an aqueous solution. 
     
     
       9. The method according to  claim 6  wherein said electroluminescent layer comprises an organic material. 
     
     
       10. The method according to  claim 6  wherein said display device is an active matrix type display. 
     
     
       11. A method of manufacturing a display device comprising:
 covering only a part of an electrode with an insulating material; 
 forming a layer which contains a first acceptor on an exposed portion of the electrode and a surface of the insulating material by applying a first liquid which contains the first acceptor onto the electrode; 
 washing the layer which contains the first acceptor with water, thereby removing a first part of the layer which contains the first acceptor from a central portion of the electrode and from a top portion of the insulating material; 
 wherein a second part of the layer which contains the first acceptor remains on the corner of the electrode and the insulating material after washing the layer which contains the first acceptor with water, 
 forming a conductive layer comprising a second acceptor over the electrode and the second part of the layer which contains the first acceptor by applying a second liquid which contains the second acceptor over the electrode; and 
 forming an electroluminescent layer on the conductive layer comprising the second acceptor. 
 
     
     
       12. The method according to  claim 11  wherein said second acceptor is the same as the first acceptor. 
     
     
       13. The method according to  claim 11  wherein each of said first liquid and said second liquid is an aqueous solution. 
     
     
       14. The method according to  claim 11  wherein said electroluminescent layer comprises an organic material. 
     
     
       15. The method according to  claim 11  wherein said display device is an active matrix type display. 
     
     
       16. A method of manufacturing a display device comprising:
 covering only a part of an electrode with an insulating material; 
 forming a layer which contains a first donor on an exposed portion of the electrode and a surface of the insulating material by applying a first liquid which contains the first donor onto the electrode; 
 washing the layer which contains the first donor with water, thereby removing a first part of the layer which contains the first donor from a central portion of the electrode and from a top portion of the insulating material; 
 wherein a second part of the layer which contains the first donor remains on the corner of the electrode and the insulating material after washing the layer which contains the first donor with water, 
 forming a conductive layer comprising a second donor over the electrode and the second part of the layer which contains the first donor by applying a second liquid which contains the second donor over the electrode; and 
 forming an electroluminescent layer on the conductive layer comprising the second donor. 
 
     
     
       17. The method according to  claim 16  wherein said second donor is the same as the first donor. 
     
     
       18. The method according to  claim 16  wherein each of said first liquid and said second liquid is an aqueous solution. 
     
     
       19. The method according to  claim 16  wherein said electroluminescent layer comprises an organic material. 
     
     
       20. The method according to  claim 16  wherein said display device is an active matrix type display. 
     
     
       21. A method of manufacturing a display device comprising:
 covering only a part of an electrode with an insulating material; 
 forming a layer which contains one of an acceptor and a donor on an exposed portion of the electrode and a surface of the insulating material by applying a first liquid which contains said one of the acceptor and the donor onto the electrode; 
 washing the layer which contains said one of the acceptor and the donor with water, thereby removing a first part of the layer which contains said one of the acceptor and the donor from a central portion of the electrode and from a top portion of the insulating material; 
 wherein a second part of the layer which contains said one of the acceptor and the donor remains on the corner of the electrode and the insulating material after washing the layer which contains said one of the acceptor and the donor, 
 forming a conductive layer comprising said one of the acceptor and the donor over the electrode and the second part of the layer which contains said one of the acceptor and the donor by applying a second liquid which contains said one of the acceptor and the donor over the electrode; and 
 forming an electroluminescent layer on the conductive layer comprising said one of the acceptor and the donor. 
 
     
     
       22. The method according to  claim 21  wherein each of said first liquid and said second liquid is an aqueous solution. 
     
     
       23. The method according to  claim 21  wherein said electroluminescent layer comprises an organic material. 
     
     
       24. The method according to  claim 21  wherein said display device is an active matrix type display.

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